Trenton Speedway

Trenton Speedway was a large oval that passed through
a number of interesting configurations during its life, finishing
as a rather unusual 1 1/2 mile kidney bean shaped paved oval.
The track was located on the Trenton Fairgrounds (New Jersey State
Fairgrounds) on the east side of Trenton, New Jersey.

The first auto race at Trenton was held on September 24th, 1900
on a 1/2 mile dirt oval.
A second was held on September 7th, 1907 and regular racing
started in 1912 and ran to October 12th, 1941.
Racing resumed on May 5th, 1946 on a 1 mile dirt oval.
The last race on dirt was held on September 30th, 1956,
and the track reopened as a 1 mile paved oval on June 23rd, 1957.
This oval was used through 1968, at which point it was expanded
from the conventional oval to the 1.5 mile "kidney bean" shaped oval.
It ran in this form through 1980.
The fairgrounds were torn down in 1983.

The lake in the Google image is in the middle of the area occupied
by the 1.5 mile oval. The roads through the housing development
to the east of the lake appear to roughly fall on the path of the
east side of the oval.